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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the main purpose of the Collection interface?
💡 Hint: Think of the Collection interface as a foundation.
Question 2
Easy
What type of elements does a Set store?
💡 Hint: Focus on the definition of a Set.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the Collection interface represent?
- A group of elements
- A single element
- An ordered list
💡 Hint: Think of what Collection means in programming.
Question 2
True or False: A Set allows duplicate elements.
- True
- False
💡 Hint: Recall the distinguishing feature of a Set.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a Java program that uses a List to store the names of students enrolling in a course, and demonstrate the ability to manage duplicates.
💡 Hint: Use an if-condition to check for existing names before adding a new one.
Question 2
Implement a scenario using a Map to store a phone book, where user names are keys and phone numbers are values. Create methods to add, retrieve, and delete entries.
💡 Hint: Remember to ensure that each user name is unique.
Challenge and get performance evaluation